Continuity mistake: Hannay is talking to the milkman inside the door. Outside the door you can see across the street, the two guys walking down the sidewalk. A moment later, Hannay goes toward the door and now there's the milk wagon on the street right in front of the door. When Hannay pointed out the two guys across the street to the milkman, the milk wagon wasn't there and the milkman is inside with Hannay so he couldn't have pulled it up.
The 39 Steps (1935)
Directed by: Alfred Hitchcock
Starring: Robert Donat, Lucie Mannheim, Godfrey Tearle, Madeleine Carroll
Revealing mistake: The serial number of the autogyro has been reversed, showing that the stock shot has been reversed for effect.
Continuity mistake: When Professor Jordan is speaking to Hannay, he draws out a revolver with his left hand, but when the Professor's wife leaves the room, we cut back to the Professor, and he now has the revolver in his right hand.
Trivia: Director Alfred Hitchcock has a cameo role in this film - he is seen tossing some litter as Richard and Annabella run from the music hall.
Richard Hannay: How far is Winnipeg from Montreal?
Mr. Memory: A gentleman from Canada. You're welcome, sir. Winnipeg, the third city of Canada and the capital of Manitoba. Distance from Montreal: 1424 miles.
Richard Hannay: There are 20 million women in this island and I've got to be chained to you.
Heckler in Audience: How old is Mae West? How old is Mae West?
